A platform for research: civil engineering, architecture and urbanism
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This article discusses an analytic procedure for detergents that is a modification of the methylene blue method given in Standard Methods. This method is based upon the formation of a blue salt, when methylene blue reacts with anionic surfactants. The salt is soluble in chloroform, and the intensity of the color is proportional to the concentration of the surfactant. The color intensity was measured spectrophotometrically. Various substances that occur in water can interfere. Most interfering substances produce positive errors leading to results that are probably greater than the true value. The minimum concentration detectable by this procedure is about 0.03 mg/l.
This article discusses an analytic procedure for detergents that is a modification of the methylene blue method given in Standard Methods. This method is based upon the formation of a blue salt, when methylene blue reacts with anionic surfactants. The salt is soluble in chloroform, and the intensity of the color is proportional to the concentration of the surfactant. The color intensity was measured spectrophotometrically. Various substances that occur in water can interfere. Most interfering substances produce positive errors leading to results that are probably greater than the true value. The minimum concentration detectable by this procedure is about 0.03 mg/l.
Detergents in Wisconsin Waters
Lawton, Gerald W. (author)
Journal ‐ American Water Works Association ; 59 ; 1327-1334
1967-10-01
8 pages
Article (Journal)
Electronic Resource
English
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